Which branch of math is also a dental problem?
The answer is Calculus, which is a branch of mathematics, and also a deposit on teeth.
Police Officers use math very little during the course of their career. Math would depend on what Branch of law enforcement you cover. Example, A traffic reconstruction expert would need math to work out how the accident ended up the way it did, i.e. skid marks. Forensics is also another Branch of the many that use math.